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Proceedings Article

High-efficency stable 213-nm generation for LASIK application

[+] Author Affiliations
Zhenglin Wang, Kamal Alameh, Rong Zheng

Edith Cowan Univ. (Australia)

Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, 200 (April 06, 2005); doi:10.1117/12.568979
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From Conference Volume 5646

  • Nonlinear Optical Phenomena and Applications
  • Qihuang Gong; Yiping Cui; Roger A. Lessard
  • Beijing, China | November 08, 2004

abstract

213nm Solid-state laser technology provides an alternative method to replace toxic excimer laser in LASIK system. In this paper, we report a compact fifth harmonic generation system to generate high pulse energy 213nm laser from Q-switched Nd:YAG laser for LASIK application based on three stages harmonic generation procedures. A novel crystal housing was specifically designed to hold the three crystals with each crystal has independent, precise angular adjustment structure and automatic tuning control. The crystal temperature is well maintained at ~130°C to improve harmonic generation stability and crystal operation lifetime. An output pulse energy 35mJ is obtained at 213nm, corresponding to total conversion efficiency ~10% from 1064nm pump laser. In system verification tests, the 213nm output power drops less than 5% after 5 millions pulse shots and no significant damage appears in the crystals.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Zhenglin Wang ; Kamal Alameh and Rong Zheng
"High-efficency stable 213-nm generation for LASIK application", Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, 200 (April 06, 2005); doi:10.1117/12.568979; http://dx.doi.org/10.1117/12.568979


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